The process is called facilitated transport when molecules must join with another molecule, such as proteins, to get through a membrane.
Answer:three major things in human evolution were brain development, bipedalism, and evolving terrestriality.
Explanation:
Tundra is flat, barren-like land whereas a tropical rainforest is a vast, more complex environment. Due to this, tundra provides less habitats for organisms to live in than the rainforest. This means that a greater variety of species are able to co-exist in the rainforest than in tundra, so species diversity is greater.
